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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        // 抽象工厂方法
        var VehicleFactory = function(subType, superType) {
            // 判断抽象工厂中是否有该抽象类
            if (typeof VehicleFactory[superType] === 'function') {

            }
        }
    </script>
</body>

</html>